mackey
Member
I believe Dynatrac recommends 85/90 gear oil for cold weather. The current weather in the Idaho panhandle is high of 30s and low in teens. Do I definitely need to change out my gear oil (85/140)? I tried looking up 85/90 limited slip gear oil and can't find any. Royal purple makes a 80/90. Anyone use cold weather gear oil? If so, what brand and weight. Thanks.